Clamp.



M. CALVIN &:'M. KAUFMAN. CLAMP.

APPLICATION mum r213. 20, 1909.

923,329. Patented June 1, 1909.

wumm u m .mmm

the opening in the MAX CALVIN AND MORRIS KAUFMAN, OF NEW ORLEANS, LOUISIANA.

CLAMP.

Specification of Letters Patent. Application filed February 20, 1909.

Patented June 1, 1909. Serial No. 479,195.

To all whom it may concern:

Be it known that we, MAX CALVIN and MORRIS KAUFMAN, citizens of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and useful Improvement in Clamps, of which the following is a specification.

This invention relates to a clamp for securing glass in show cases, plate glass windows, and in glass cases of various kinds.

The invention consists in the novel features of construction hereinafter full 7 described, pointed out in the claims and shown in the accompanying drawings, in which:

Figure 1 is a plan view of the device in use, the glass being shown in section. Fig. 2 is a perspective view of the device in position. Fig. 3 is a detail view of one of the clamping members. Fig. 4 is a detail perspective view of the connecting member. Fig. 5 is a longitudinal section through one of the fastening bolts.

In these drawings 1 represents the clamping members, two in number and which are formed of flat metal strips having upwardly and inwardly turned side flanges 2 extending from a point adj aoent one end of the strip to the opposite end, and connected at the last mentioned end by an end flange 3. These flanges form a guideway upon the strip, which is closed at one end, the flange 3 forming the end of the guideway. The nonflanged end of the strip is provided with a suitable countersunk opening in which fits the head of a screw, to be referred to hereafter. These strips as shown in the drawings are secured to panes of glass to be fastened together and the strips or clamping members 1 are connected. together by a flexible strip 5 which can be bent at the desired angle, to

correspond to the angle between the two panes. A connecting strip 5 1s perforated upon opposlte sides of the angle and a threaded sleeve is inserted in each perforation and pro ects through upon the inner side of the connecting strip and the inwardly projecting ends of these sleeves carry heads 7, the sleeves being headed over said heads so that they are firmly secured to the strips. These heads slide in the guideways previously mentioned, and a screw 8 is inserted into each threaded sleeve, and by tightening said screws the sleeves are drawn partly through strip, thus bringing the heads into binding engagement with the overhanging portions of the flanges. By loosening one of said screws the clamping member with which screw cooperates can be moved relative to the connecting strip and the other clamping member, or the connecting strip and other clamping member can be moved longitudinally along the guideway of the clamping member in which the loosened head slides. To secure these clamping members to the window pane a hollow threaded bolt 9 having a concavo convex head 10 of more or less elastic metal is passed through the usual opening in the glass and through the opening in the clamping member to be attached, a concavo convex spring washer 11 being first slipped upon the bolt to bear upon the inner face of the glass, and screws 12 are then threaded into the bolt, the screw'head resting in the countersunk opening previously referred to.

It will be obvious that after one of the clamping members has been secured to one sheet of glass, the other clamping member can be adjusted in its proper position, the connecting strip being bent to the proper angle, and when the screws 12 have been tightened, the screws 8 can also be tightened, thus doubly locking the clamping members against movement with respect to each other. But it will also be obvious that even if the screws 8 should become loose after the device has been clamped to the window by the bolts Q an d screws 12 the clamping members cannot become detached as the heads 7 still remain in the guideways and would hold the connecting strip in place.

that we claim is:

1. A window holding device consisting of two plates having guideways thereon, an angled connecting strip, heads carried by said strip and sliding in the guideways, means for bringing said. heads into binding engagement with the clamping members, and window holding means carried by the clamping plates.

2. A device of the kind described comprising plates having side flanges throughout a part of their length and flanged at one end, the side flanges extending inwardly over the plates, the said flanges forming guideways, window fastening bolts carried by the nonflanged portions of the plates, and a connecting strip of flexible metal, said strip carrying heads adapted to slide in said guideways, and screws for drawing said heads into binding engagement with the side flanges,

the said heads being permanently connected heads sliding in the guideways, and screws 16 to the connecting-strip; Working in said sleeves and drawing the 3. The combination With glass clamping heads into binding engagement with said members, said members having guideways guideways.

formed thereon, an angled strip, said strip MAX CALVIN.

being perforated adjacent its ends, sleeves MORRIS KAUFMAN.- Working in said perforations, said sleeves be- Witnesses:

ing interiorly threaded, heads carried by and i LOUIS P. BRYANT,

permanently secured to said sleeves, thel A. H. BITTER. 

